Tubular telescoping jack or press.



PATENTED MAY 22, 1906.

APPLIGATION FILED JAILZO, 1905.

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UNITED STATES PATENT OFFICE.

SIMON B. MINNIOH, OF LANDISVILLE, PENNSYLVANIA, ASSIGNOR TO MARYMINNIGH, OF LANDISVILLE, PENNSYLVANIA.

Specification of Letters Patent.

ratenteo. May 22, 1906.

Application filed January 20, 1905. Serial No. 241,998.

To aZZ whom it may concern.-

Be it known that I, SIMON B. MINNIOH, a citizen of the United States,residing at Landisville, in the county of Lancaster and State ofPennsylvania, have invented certain new and useful Improvements inTubular Telescoping Jacks or Presses; and I do hereby declare thefollowing to be a full, clear,,and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to improvements in a tubular telescoping jack orpress of that class in which two tubes are made to telescope one withinthe other, the outer tube having its lower end rigidly secured into abase-plate upon which to stand and the inner or telescoping tube movableup and down within said former tube and having at its upper end aring-flanged plate to engage against the under surface of a ceiling orjoist when the jack is to be used as a press, with a lever and pawlprovided, whereby the telescoping tube is raised or lowered.

The object of the invention is the construction of a jack or press towork between certain prescribed limits, being simple in construction,readily applied, and not liable to get out of order.

The elements of the invention will severally and at large appear in thefollowing description, and they will be separately or combinedly setforth in the appended claims.

The purposes of the invention are attained by the mechanism, devices,and means illustrated in the accompanying drawings, with similarreference characters to designate like parts throughout the severalviews, in which- Figure 1 is a front elevation of the jack in engagementabove and below when used for pressing, showing a pawl and lever inposition; Fig. 2, a longitudinal central vertical section of the same,but showing the leverarm and suspending-links in full side elevation;Fig. 3, a top view of the upper cap or plate as it appears when removedfrom the ceiling ;Fig. 4, an inverted view of the same cap or plate,showing an upper end extensiontube in place; Fig. 5, a top view of thering-cap or flanged plate as'it appears when removed from the upper endof the telescoping tube; Fig. 6, a cross-section of the telescopingtube, taken on the line w a: in Fig. 2, showing the pin for supportingthe extensiontube in place; Fig. 7, a cross-section of the lever-arm andpawl-supporting collar, taken on the line y y in Fig. 1, with thelever-arm-supporting links and the pawl removed; Fig. -8, a crosssectiontaken on the line 2 z in Fig. 2, showing the telescoping-tube-liftingpin or rod in place Fig. 9, an inverted plan of the baseplate as itappears when removed from the follower or press-board.

In the drawings, A designates the outside or supporting tube of therequired dimensions, having its lower end rigidly secured in anyapproved manner into the top of an approved base-plate A, which plate isadapted to be placed on top of afollower or press-board, (indicated bythe numeral 1.) In one side of this tube is a vertically-disposed slot(1 of the required dimensions to be engaged by the lever-arm end, thehook of the depending pawl and the telescoping-tube-lifting pin inplace. Inside of this tube is mounted to be moved up and down therein asecond tube A of the required dimensions, which is called in thisdescription the telescoping tube, having in its side a prescribedvertical slot (1 of the required dimensions to register with the slot aof said former tube, but being made slightly wider than said slot at, asindicated by dotted lines a, in Fig. 1, allowing freedom of motiontherethrough of the lever-arm end and the pawl-hook in performing theirfunctions.

In a. vertical plane perpendicular to the central vertical plane of saidslot at are arranged a number of pins a which have their extremitiesrigidly secured, as by riveting, into the opposite sides of said centraltube, and bein the required distance apart to be engaged y the inner endof said lever-arm and by the pawl-hook. (Best shown in Fig. 2.) With itsforward end extending through said slot a and situated in its centralvertical plane is a pin or rod A which pin passing through the sides ofsaid central tube is rigidly secured thereto in any approved manner,being adapted to keep the slots in vertical alinement and to raise orlower said inner tube when so desired, and the tube A has at its u perend a ring cap or flanged plate A, with an orifice in the center thereofof equal diameter with the inside diameter of said tube Aflwhile withinthe tube A and resting on the base-plate A is placed a prescribed washeror disk of lead to constitute a cushion A for the tube A to impinge uponwhen it is suddenly dropped or lowered.

At the required height from the bottom of the tube A and surrounding thesame is a prescribed collar B, rigidly secured in place by a set-screwb, which may have its inner end passing through the body of said tube,and on the side opposite the set-screw said collar is provided with alug orear b, situated in the vertical plane of said slot a. Said lug bis pierced by an orifice b through which orifice a bolt B serves topivot thereto the upper ends of a pair of links or hangers, and betweenthe lower ends of which links is pivoted, by a bolt B a prescribedlever-arm B so that its end will engage underneath the pins a of thecentral tube to raise the tube the desired distance for the pawl toengage on said pins a and the lever-arm has at its outer end a hand-gripor handle I) whereby to manipulate said lever-arm end Of course saidlever-arm end has formed in its upper surface a transverse groove to beengaged by the under sides of the respective pins a of the central tube,and the under side of said lever-arm end is made upwardly slopin so thatit may readily slide from over t e top of a succeeding pin when theouter end is raised, thereby adapting said lever-arm end to passunderneath said succeeding pin to engage it. (Best shown in Fig. 2.)With their inner ends rigidly secured through the sides of the collar atright angles with the plane of the lever-arm are bolts B*, with nuts 5on their threaded ends, onto which are ournaled the upper ends of armsI) of the pawlhook B which hook, shaped as shown in Figs. 1 and 2, isadapted to pass through the slots (1 and a of the tubes, with its upperedge slightly recessed to engage underneath the required pin a of thecentral tube and its under edge slightly curved or sloped to readilypass over the upper side of the succeeding pin before engaging on theunder side thereof. (Also best shown in Figs. 1 and 2.)

When so desired or required, said inner tube A may be lengthened byhaving inserted therein through its top plate or ring-cap A a tube C,provided at its upper end with a ring flange C, secured thereto in anyapproved manner and adapted to engage against a ceiling or oist,(indicated by the numeral 2,) and this latter tube 0 has in its oppositesides in line with the pins a prescribed slots 0 to be engaged by a pin0, with its extremities rigidly secured to the sides of the tube A andthrough the oppositely-disposed side edges of the slots 0 are formedbranch openings or recesses c to be engaged by said pin 0 by rotation ofsaid latter tube C to extend or retreat said latter tube within the tubeA Of course said tube C may have its lower end closed, as indicated bydotted lines 0 in Fig.

2, and when only one extension is required the slot with the siderecesses may be omitted and the lower end of the tube placed on top ofsaid pin 0.

The invention having thus been ascertained and described and the mannerin which its functions are performed fully shown and set forth, what isconsidered new, and desired to be secured by Letters Patent, is-

1. The combination in a press with the tube A secured and having thebase-plate A and the vertical slot at, of the telescoping tube A mountedtherein and having the vertical slot a with the series of pins a rigidlysecured into the opposite sides thereof, and the ring or flanged plate Arigidly secured to its upper end, with the cushion A placed within thetube A and on said base-plate A, with means provided to raise or lowersaid telescoping tube, all substantially as described and for thepurpose hereinbefore set forth.

2. The combination in a press with the tube A and the telescoping tube Amounted therein with the pins a secured into the opposite sides thereof,said tubes having respectively the vertical slot a and the vertical slota, of the collar B rigidly secured to said first-meantioned tube, saidcollar having the lug or ear I) with the orifice and the bolt B with thelinks or hangers having their upper ends pivoted on said bolt and theirlower ends j ournaled to the sides of the lever-arm B said lever-armhaving its end notched above and upwardly sloped on its under side forthe successive engagement with said pins a substantially as describedand for the purpose hereinbefore set forth.

3. In a press of the character described having the telescoping tubes Aand A said former tube having the slot (1 and said latter tube the slotat with the pins (1 all as shown, the combination with the collar B asdescribed and rigidly secured to said tube A and having the bolts Brigidly secured into the opposite sides thereof, of the pawl-hook Bhaving the upper ends of its arms I) journaled to said bolts B said armshaving at their lower ends the pawl-hook B shaped as shown and engagingthrough said slots with its inner end to successively engage on saidpins a substantially as described and for the purpose hereinbefore setforth.

4. In a press of the character described having the tube A and thetelescoping tube A said former tube having the slot (1 and saidtelescoping tube having the slot a, the combination with said lattertube of the pin or rod A passing through the slots and rigidly securedthereto with its forward end eX- tending through said slot a closelyengaging the side edge thereof, substantially as described and for thepurpose hereinbefore set forth.

5. The combination in a press of the character described having the tubeA and the telescoping tube A? with the flanged cap A ing on said pin 0,substantially as described 10 at the upper end thereof, and having thecenand for the purpose hereinbefore set forth.

tral orifice of equal diameter With the inte- In testimony whereof Iaflix my signature rior diameter of the tube A and the pin 0 in presenceof two Witnesses. rigidly secured into the opposite sides there- SIMON BMINNICH of, With said telescoping tube, of the extension-tube C With thering flange C secured to Witnesses:

the upper end thereof, said latter tube C situ- CHAS. E. LONG, atedWithin the telescoping tube and engag- DANL. H. HERB.

